<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./bootstrap/css/bootstrap.css" />
</head>
<body>
    <div class="container">hah</div>
    <div class="container-fluid">hhh</div>
</body>
</html>